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Finding the Fourth Proportional to 9,871.68, 14,802.90 and 3,630.12

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Solution

The fourth proportional to 9,871.68, 14,802.90 and 3,630.12 is: 5,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.68 : 14,802.90 = 3,630.12 : x
  2. Step 2: Convert to fraction form
    9,871.68/14,802.90 = 3,630.12/x
  3. Step 3: Cross multiply
    9,871.68x = 14,802.90 × 3,630.12
  4. Step 4: Simplify right side
    9,871.68x = 53,736,303.35
  5. Step 5: Solve for x
    x = 53,736,303.35/9,871.68
  6. Step 6: Final answer
    x = 5,443.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.